On December 27, the 16th China Security Forum Technical Forum was held during the CPSE security Expo. Tang Linpeng, co-founder of murky technology and CTO, delivered a keynote speech on AI + trusted biometric engine: accurate and reliable, active and convenient, and privacy protection at the forum, comprehensively explaining the leadership and broad application prospects of trusted biometric technology driven by AI and other technological innovation.

From 2020 to 2025, the global biometric industry will grow rapidly at a compound annual growth rate of 14.6%, which is expected to reach nearly $70 billion * by 2025. The traditional finger palm biometric method will still occupy a large share in the market.

With the rapid development of 5g, artificial intelligence, aiot, cloud computing and digitization, it will further promote the vigorous development of biometric market. Therefore, society needs biometric technologies and products with high precision, high reliability, smooth and seamless and privacy protection, so that people can shuttle back and forth safely and conveniently in the physical and digital world.

However, there are also hidden worries under the prosperity – due to its lifelong invariable attributes, once the personal biometrics are leaked, they will cause greater security risks, and unlike passwords, they cannot be changed or retrieved once they are leaked. Therefore, biometric technology and data privacy security are very critical.

The next generation of trusted biometrics has three characteristics: accurate and reliable, active and convenient, and privacy protection

On November 1 this year, the personal information protection law of the people’s Republic of China was officially implemented. The law defines the principle of notification and consent and the principle of minimum necessity for personal information processing, and also requires the security of sensitive personal information to be protected by technical means such as data desensitization, de identification and anonymization.

In order to protect the important sensitive personal information of “biological original characteristics”, murky technology proposes that the next generation of trusted biometrics should have three characteristics: first, it is accurate and reliable, that is, biometrics can achieve high precision and performance without a large amount of data labeling; Second, it is active and convenient to realize natural, easy-to-use, informed and controllable interactive experience; The third is to protect privacy, which can be proved technically from the source.

Murky technology focuses on non-contact recognition of palmar lines and palmar veins. These “hand” biometric recognition technologies have advantages in accuracy, initiative and convenience and privacy protection.

For example, murky M1 intelligent all-in-one machine recently launched by murky technology adopts the dual-mode fusion technology of palmprint + metacarpal vein. Among them, palmprint has multi-scale features, rich information and high precision; Palmar vein recognition uses near-infrared imaging technology to image the veins of flowing blood. It has living information, is difficult to steal, prevents counterfeiting attacks, and has high privacy; Non contact collection and identification, hand picking, smooth experience, easy to use, high privacy and security.

Dexterous hands enable humans to operate and control tools and make humans intelligent creatures. Murky hopes to use technology to help people push open the door to the digital universe in the AI era with both hands and make biometrics more natural, friendly and controllable.

Taking fingerprint, finger vein, palmprint, palm vein and other hand biometrics as the origin, taking AI underlying technology innovation as the support and safe and convenient non-contact interaction as the contact point, murky technology intelligent and trusted biometric engine enables government and enterprise businesses such as smart security, smart city, finance, culture and tourism, entry and exit, elderly care and so on, leading biometrics into accurate, reliable, active and convenient A new stage in protecting privacy.

Precision and reliability: stepping into the era of high precision and high reliability biometrics at the level of one billion

In terms of accuracy and reliability, murky technology can achieve billions of levels of high-precision and high-performance unique certification. 1: 1. In the verification scenario of 1: n, when the scale of N reaches 1 billion, this accuracy represents 20000 errors and is completely unavailable. Large storage capacity identification puts forward very high requirements for the system and algorithm.

At present, the mainstream image search scheme based on deep learning has some limitations. For example, it relies on a large amount of training data and is sensitive to some complex environments, such as occlusion, illumination, angle transformation and so on. It needs to build a more complex infrastructure to meet the massive actual needs, and the image search results are often not accurate enough.

To this end, murky technology has developed a new set of unstructured data representation and retrieval technology, which uses multi-scale vector and graph representation to depict the image from the whole to the part at each layer with vector and graph as the core, so as to improve the feature information by multiple orders of magnitude compared with a single scale vector.

At the same time, murky will also establish a search friendly representation based on multi-scale representation, such as heterogeneous retrieval with multi-stage and Multi Strategy fusion, so as to achieve the effect of high speed and high precision. In terms of training data requirements, because the multi-scale image representation is realized at the bottom, murky can greatly improve the utilization of a single image and adopt the method of self supervised learning. Compared with only relying on end-to-end deep learning, the amount of training data required has been reduced by an order of magnitude, and murky’s small sample self-learning framework has been realized, which makes murky technology break through the problem of large database attenuation of traditional biometrics. Even for low-quality fingerprints, under the capacity of 1 billion databases, the top ranking rate reaches 90%, the top five rates reach 99%, and there is no need for manual labeling, It greatly improves the efficiency and helps users take the lead in realizing second level, high-precision and automatic search and recognition on 1 billion level images in the world.

At present, murky technology has supported the construction of a super 4 billion level intelligent finger palmprint platform, supported real-time comparison on billions of finger palmprint images, and has the characteristics of high precision, high performance, intelligence, security and easy maintenance. The service has been applied to 28 provinces in China.

Active convenience: achieve an active, informed, contactless and convenient experience

Traditional palmprint collection and recognition often need contact, especially in the case of epidemic, there is a risk of infection.

Murky technology uses AI technologies such as multi eye vision, structured light, three-dimensional reconstruction and image enhancement to comprehensively upgrade the traditional contact finger palmprint technology to the non-contact era. Users only need to reach out to complete the collection, identification and temperature measurement, and experience smoothness, efficiency and convenience. At the same time, the whole process needs user authorization, informed and controllable, so as to protect privacy and security.

Protect privacy: create an indestructible “safe” for biological information

Murky technology believes that the next generation of biometric technology should protect privacy at the source. At present, the mainstream application of biological information is to retain the original image information or save the template on the platform. Even the template can recover a considerable number of original biometrics, which can not effectively protect privacy.

How to use biometrics and protect privacy? This requires that the biometric platform does not store the original biometric or the template of the original biometric, but uses the transformed biometric template. Murky technology deeply integrates and innovates biometrics and underlying cryptographic tools, so that the transformed template meets the three characteristics of irreversibility, revocability and non Association. Similar to a safe, only real users can open the safe, get the key and unlock the application.

In terms of technical implementation, murky solves the inconsistency of features caused by the change of acquisition environment in comparison through error correction code, and also improves the fault tolerance rate. In order to further protect privacy and security, murky adds a lot of noise to the biometrics to protect that the original biometrics cannot be restored. What the attacker sees is only chaotic, true and false feature points. The cracking work is equivalent to solving a NP hard mathematical problem, so as to protect privacy and security, and its security can be mathematically proved.

The next generation of reliable biometric technology created by murky technology is accurate and reliable, which can realize high-precision and high-performance biometric recognition under the storage capacity of billions; At the same time, it has the characteristics of initiative and convenience, and users can reach out to realize users’ informed and controllable natural interaction; In addition, murky’s biometric technology fully protects privacy and realizes mathematically proven strong privacy security at the source.

Combined with these three characteristics, murky technology has also launched products and solutions for different industries and application scenarios to connect digital and physical identities, link the identities of the online world and the physical world, and enable industries such as travel, culture and tourism, hotels, communities, payments, hospitals and elderly care, providing a more convenient and safer identity authentication experience for the industry.

*Data from third-party research institutions

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